common: Makefile: Rule to compile bmp.c

Add rule to compile bmp.c at SPL and u-boot proper when CONFIG_SPL_BMP
and CONFIG_BMP are defined.

Signed-off-by: Nikhil M Jain <n-jain1@ti.com>
Reviewed-by: Devarsh Thakkar <devarsht@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
diff --git a/common/Makefile b/common/Makefile
index 3a6ca33..c87bb2e 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -45,6 +45,7 @@
 
 obj-$(CONFIG_$(SPL_TPL_)BOOTSTAGE) += bootstage.o
 obj-$(CONFIG_$(SPL_TPL_)BLOBLIST) += bloblist.o
+obj-$(CONFIG_$(SPL_)BMP) += bmp.o
 
 ifdef CONFIG_SPL_BUILD
 ifdef CONFIG_SPL_DFU